The series is set in a futuristic theme park, where visitors can act out their darkest fantasies with androids in the park. Evan Rachel Wood, James Marsden, Thandie Newton, Anthony Hopkins and Ed Harris star on the show, which is scheduled to premiere in 2016.
In the teaser, Wood's character, Dolores, is trapped in a nightmare, and is asked whether she's ever "questioned the nature of [her] reality."
Get a first look at Westworld below. Will you watch?